I realize the apex is the outline of the template and needs to be maintained. Am I trying to center the apex with the rail mark and the tuck mark? or should it be 60/40 or 70/30 or something split top to bottom? This is my first board and I am hand shaping it from an eps blank with a planer and hand sanding. Help is greatly appreciated. I am trying to gain a complete understanding of all aspects of this building process. It has been an enjoyable learning experience so far and I only hope that the board will be somewhat rideable.
Search the archives and read Barnfields comments on Rail Bands. He posted two exstensive threads; One on Longboard Rail Bands and a second one on Rail Bands in general. Just type Barnfield on the search function and both posts will come right up.
I have searched many times and read the longboard post. The original huge railband post was linked but the links are dead and the download zip file is also dead.
The greenlight chart is a good place to start, you can scale the numbers to match your thickness so in your case multiple the apex value by 2.75/2.5. I personally wouldn’t recommend doing that for this board but I prefer thinner rails. Below is a good video with a good explanation on copying rails. He recommends .25” above and below your apex mark.
That 1 1/8 line above the apex stays constant from the tail to the nose except the 12 inches at the nose and tail correct? Is that the only line that is held constant throughout the bands?
He says he uses 1 1/8 for all his boards from 2.5 inch to 3.25” thickness. What size would the bottom tuck be? Does that taper completely front to back (15 - 22 from tail) or is it fairly constant only tappering in the front 12 inches and close to the front fins?